12221221101 has 32 divisors (see below), whose sum is σ = 16858254336. Its totient is φ = 7869312000.

The previous prime is 12221221091. The next prime is 12221221121. The reversal of 12221221101 is 10112212221.

It is not a de Polignac number, because 12221221101 - 2²² = 12217026797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221221121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12331716 + ... + 12332706.

It is an arithmetic number, because the mean of its divisors is an integer number (526820448).

Almost surely, 2^12221221101 is an apocalyptic number.

It is an amenable number.

12221221101 is a deficient number, since it is larger than the sum of its proper divisors (4637033235).

12221221101 is a wasteful number, since it uses less digits than its factorization.

12221221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12221221101 its reverse (10112212221), we get a palindrome (22333433322).

The spelling of 12221221101 in words is "twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred one".